Diabetic patients wound is not easy to heal, the main reasons are as follows: 1, their own immunity is relatively low: white blood cell wandering function is weak, can not timely clear the pathogenic bacteria around the wound, easily lead to wound infection does not heal; 2, combined with peripheral nerve and peripheral vascular lesions: peripheral vascular lesions including microcirculation disorders, can lead to the patient’s wound blood supply is not sufficient, is not conducive to wound healing; 3, the existence of blood glucose, Lipid and protein metabolism disorders and obstacles: wound healing requires a variety of proteins and cytokines synthesis is insufficient, will prevent and impede the patient wound healing; 4, the wound contains high glucose content: high glucose for the fine better medium, diabetic patients with poor glycemic control, blood glucose content in the blood is high, easy to breed bacteria in the wound, resulting in wound infection and not healing. In order to prevent wounds from not healing, or even serious wound infections, diabetic patients should have strict control of blood glucose, and it is currently recommended that diabetic patients should have their fasting blood glucose controlled at 3.9-7.0mmol/L, non-fasting blood glucose should be controlled at ≤10mmol/L, glycosylated hemoglobin should be ≤7.0%, body mass index <24kg/m2, and blood pressure should be controlled at 130/80mmHg or less. Good control of blood glucose can promote wound healing.